Mechanical movement.



No. 669,379. Patented Mar. 5, l90l.

A. BAUGHMAN. .MECHANICAL MOVEMENT. (Application filed Nov. 8,1900) (NuModel.) 2 Shoets-SheaLl.

No. 699,379. Patented mar. 5, 190|.

A. BAUGHMAN.

MECHANICAL MOVEMENT.

Application filed Nov. 8, 1900) (No Model.) 2 Sheets-Sheet 2.

UNiTnn STATES nParent OFFICE.

ALVIN BAUGHMAN, OF GRISWOLD, IOWA, ASSIGNOR OF ONE-FOURTH TO GEORGEPLUMMER BAUGHMAN, OF WHATOHEER, IOWA.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 669,37 9, dated March5, 1901.

Application filed November 8, 1900. Serial No. 35,863. (No model To alwhom it may concern: guards 5, which, as shown, consist of curved Be itknown that I, ALVIN BAUGHMAN, a plates secured to the opposite sides ofythe citizen of the United States, residing at Grisframe l and projectingbeyond the periphery Wold, in the county of Cass and State of Iowa,thereof. The trackway 3 is by this construc- 55 5 have invented new anduseful Improvements tion closed on opposite sides at the ends of inMechanical Movements, of which the folthe frame. Adjacent to one end ofeach of lowing is a specification. the curved guards 5 are rollers 6 6,arranged My invention relates to mechanical movein pairs upon oppositesides of the frame 1 ments, the object of the same being to proandserving as engagingportions for cams, 6o 1o vide novel means forconverting rotary into as will hereinafter appear. The rotary shaftreciprocating motion, or vice versa, the same 7 lies at right angles tothe plane of the frame being adapted for use in connection with Y l,extends into or through said frame, and windmills, engines, bicycles,and the like. has a pinion 8 thereon Which meshes with The inventionconsists of a hollow substanthe rack-teeth 2. In order that the pinion 86; tially elliptical frame having internal rackmay travel from therack-teeth 2 on one side teeth thereon, arotary shaft, apinion thereonof the -frarne 1 to those on the other side, meshing with said rackteeth, a traveler some means must 'be provided for guiding adapted tomove upon a track on the outer the frame l and for holding the pinion 8in surface of said frame loosely connected with engagement with theteeth 2 on one side or 7o zo said shaft and having a cam thereon adaptedthe other. The means provided by me conto engage a roller on said framefor automat-y sists of track-travelers 9 in the form of antiicallyshifting said traveler from one side of friction rollers mounted in theends of arms the frame to the other at opposite ends of the 10, looselyvmounted on the shaft 7 on opposite stroke. sides of the pinion 8. Theserollers 9 are 75 The invention also consists in certain feaadapted tomove in the two parts of the tracktures and details of construction andcom- Way 3, and as they are mounted on the shaft binations of parts,which Will be hereinafter 7 they Will serve to maintain the pinion 8 inmore fully described and claimed. engagement With the rack-teeth 2 ofthe In the drawings forming a part of this frame l no matter what therelative position 8o l 3o specification, Figure l isaside elevationillusof the shaft 7 and said frame may be. The trative of my invention.Fig. 2 is a top or ends of the arms lO opposite those in which edge'viewof the same. Fig. 3 is a view simithe rollers 9 are mounted are in theform of lar to Fig. l, showing the reciprocating memcams, the same beingprovided with cam-surbernear the end of its stroke in one direction;faces 1l, which are adapted to engage the 8 5 and Fig. 4.- is an endview, partly in section. rollers 6 on the frame l. Said cam-surfacesFig. 5 is a side elevation illustrating a modi- 1l gradually increase indistance from the fled construction. Fig. 6 is a top or edge shaft 7from the points l2 to the extreme ends view of the same. Fig.7isacross-section on of the arms lO opposite the rollers 9. By

the line 7 7 of Fig. 5. this construction it Will be seen that if the 9o4o Like reference-numerals indicate like parts shaft 7 be the drivingmember and the frame in the different views. l the driven member whenthe pinion 8 is in The hollow frame l is substantially ellipmesh withthe teeth 2 on the lower side of the tical in shape having straightparallel sides frame l the rollers 9, which constitute the and roundedends. The inner surface of the track-travelers, Will lie beneath theshaft 7 95 frame l is provided with rack-teeth 2, and and be inengagement with that portion of the periphery of said frame is formedwith a the track 3 which is on the under side of the track 3 extendingentirely around the same. frame l. Now then when the frame l has Thistrack 3 is double, the two parts thereof been moved to a point near theend of its being separated from each other by a projectstroke to theleft the cam-surfaces l1 on the 10o o ing rib 4. At the curved ends ofthe frame l arms lO will be brought into engagement with the two partsof the track are provided with the rollers 6 at the upper right-hand endof the frame 1. The result of this action will be to throw the lowerends of the arms 10, carrying the rollers or track-travelers 9, totheright, and thence upwardly around the curved end of the track 3 betweenthe guards 5 until they assume a position in the track 3 on the upperside of the frame 1. The continuous rotation of the shaft '7 will movethe frame 1 to the right, the pinion 8 being held in mesh with therack-teeth 2 of the frame 1 by the engagement of the rollers 9 with theupper part of the track 3. When the frame 1 reaches the end of itsstroke to the right, the cam-surfaces 11 are brought into engagementwith the rollers 6 at the lower left-hand end of the frame 1, and thearms 10, carrying the rollers or track-travelers 9, are turned first tothe left and then downwardly into their original position beneath theshaft 7 and in engagement with the lower part of the track 3. It willthus be seen that the pinion 8 and rack-teeth 2 are held in mesh witheach other at all positions. Furthermore, it is then impossible for anyclogging or binding between the different parts of the device by reasonof the engagement of the pinion 8 with more than one portionof therack-teeth.

In the modified form of myinvention illustrated in Figs. 5, 6, and 7 ofthe drawings thel elliptical frame 1L is made in two parts parallel toeach other and slightly separated, so as to form a continuous gnideway13 between them. The two parts of said frame are held in this positionby means of U-shaped connecting-plates 14 14, secured to the ends of thetwo parts of said frame. The cams 11 are, as before, loosely mounted onthe shaft '7; but two pinions 8 8b are secured to saidv shaft which meshwith the rack-teeth on the two parts of the frame 1a. A single arm 10a,in which the rollers or track-travelers 12a aref mounted, is employedinstead of the twin arms 10 and rollers 9. The end of the arm 10aadjacent to the rollers 9a projects through the guideway 13 between thetwo parts of the frame, and the opposite end of said arm 10 is formedwith a circular enlargement 15, whose edge projects into the guideway13. Thel arm 10 is loosely mounted on the shaft 7 and is secured to thecams 11 by means of bolts, screws, or other analogous securing devicesextending through said cams and said circular enlargement 15. Byconstructing the device in the manner just described a singletrack-traveler-su pporting arm 10' instead of af plurality ofthe samemaybe employed,and the arm 10a and its circular enlargement moving inthe guideway 13 serve as guides or guards to prevent the lateraldisplacement of the frame 1a and the cams 11 and pinions 8a and 8b,connected with the shaft 7. The operation of this form of my inventionis similar to that described with reference to the construction shown inFigs. 1, 2, 3, and 4 of the drawings.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, isl 1. The combination with a hollow,substantially elliptical frame having internal rackteeth thereon, arotary shaft and a pinion thereon adapted to mesh with the rack-teeth onsaid frame, .of a track-traveler adapted to engage the periphery of saidframe for holding said pinion in engagement with said rackteeth, andmeans for automatically shifting said traveler from one side of theframe to the other at the ends of the strokes of said frame.

2. The combination with a hollow, substantially elliptical frame havinginternal rackteeLh thereon, a rotary shaft and a pinion thereon adaptedto mesh with the rack-teeth on said frame, of a track-traveler looselyconnected to said shaft and adapted to engage the periphery of saidframe for holding said pinion in mesh with said rack-teeth, and meansfor shifting the position of said traveler from one side of said frameto the other at the ends of the strokes of said frame.

3. The combination with ahollow, substantially elliptical frame having.internal rackteeth thereon, a rotary shaft and a pinion thereon adaptedto mesh with the rack-teeth on said frame, of an arm loosely connectedwith said shaft, an antifriction-roller mounted in said arm constitutinga track-traveler, and adapted to move on a track on the periphery ofsaid frame for holding said pinion in mesh with said rack-teeth, andmeans for automatically shifting the position of said rollers from oneside of said frame to the other at the ends of the strokes of saidframe.

4. The combination with ahollow, substantially elliptical frame havinginternal rackteeth thereon and having engaging portions on oppositesides near its opposite ends a rotary shaft and a pinion on said shaftadapted to mesh with said rack-teeth, of a track-traveler adapted tomove in a track on the periphery of said frame for holding said pinionin mesh with said rack-teeth, and a cam connected with said traveler andadapted to be acted upon by said engaging portions for shifting saidtraveler from one side of said frame to the other.

5. The combinationwith a hollow, substantially elliptical framehavinginternal rackteeth thereon, a rotary shaft and a pinion thereon adaptedto mesh with the rack-teeth on said frame, of a track-traveler adaptedto engage the periphery of said frame for holding said pinion inengagement with said rackteeth, means-for automatically shifting saidtraveler from one side of the frame to the other at the ends of thestrokes of said frame,

and a guide or guard for holding said frame and said pinion in properrelation to each other.

6. The combination with a hollow, substantially elliptical frame havinginternal rackteeth thereon and having engaging portions IOC) IIO

on opposite sides near its opposite ends, a rotary shaft, and a pinionon said shaft adapted to mesh with said rack-teeth, of a tracktraveleradapted to move on the periphery of said frame for holding said pinionin mesh with said rack-teeth, a cam connected with said traveler andadapted to be act-ed upon by said engaging portions for shifting saidtraveler from one side of the frame to the other, and a guide or guardfor preventing lateral displacement of said frame and said pinion andcam with respect to each other.

7. The combination witha hollow, substantiallyelliptical frame havinginternal rackteeth thereon and having engaging portions on oppositesides near its opposite ends, the said frame being made in two partsforming a continuous guideway between said parts, a rotary shaft, andpinions on said shaft adapted to mesh with the rack-teeth on the twoparts of said frame, of an arm loosely mounted on said shaft andprojecting through said guideway, one end of said arm having a circularenlargement thereon which projects.

